This test board contains a plug-in test circuit suitable for VNWA Testboard, with additional 0805 and 1206 test circuits. Suitable Model: This test board kit is designed for use with NanoVNA, NanoVNA-H, NanoVNA-H4, and NanoVNA-F series vector network analyzers for convenient measurement and device testing. DIY kit with stable performance, high accuracy, and high sensitivity. Made from quality materials for durable, long-term use. Note: The circuit design may not cover all test scenarios; some adjustments or modifications may be required. Ensure you have sufficient hands-on skills before use. Material: Plastic Color: Blue Package Contents: 1 x Testboard Main Board 6 x SMA Female Head 4 x 6mm Copper Stud 4 x M2.5 Screw 2 x 40pin Round 2 x 0805 49R9 Calibration Resistance The package includes only the items listed above; other accessories are not included. Note: Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement error allowance is +/- 1-3cm.